The underlying task here is to maintain and advance the momentum of Psychologically Informed Environments (PIEs) primarily but not exclusively in homelessness resettlement services, whist retaining their innovative and service-led character.

Therefore a tool that allows services, commissioners and others to identify for themselves how far they have reached, in developing as a psychologically informed service, needs to support this double aim. This has a number of more general implications, explored in this section, as broad requirements for a PIEs assessment tool.